如何使用漂亮的汤刮标签属性列表

Question

我正在尝试在xml文件中抓取一个标记属性列表。但是，我没能抓取标签属性的列表。

例如，我的数据看起来像

<sentences>    
<sentence id="1126814:0">
<Opinions>
<Opinion target="Leon" category="RESTAURANT#GENERAL" polarity="positive" from="0" to="4"/>
<Opinion target="Leon" category="AMBIENCE#GENERAL" polarity="positive" from="0" to="4"/>
<Opinion target="specials" category="FOOD#QUALITY" polarity="positive" from="95" to="103"/>
<Opinion target="atmosphere" category="AMBIENCE#GENERAL" polarity="positive" from="123" to="133"/>
<Opinion target="French bistro fare" category="FOOD#QUALITY" polarity="positive" from="70" to="88"/>
</Opinions>
</sentence>
</sentences>

我想把意见标签中的每一个类别都删掉。

category_list = ('1126814:0',[('RESTAURANT#GENERAL','positive')], [('AMBIENCE#GENERAL', 'positive')], [('FOOD#QUALITY', 'positive')], [('AMBIENCE#GENERAL', 'positive')])

我已经尝试了以下代码：

from bs4 import BeautifulSoup
with open("new2.xml", "r") as file:
url = file.read()
soup = BeautifulSoup(url, "html.parser")
required0 = soup.find_all("sentences")
text1 = []
for i in required0:
sent_id = []
category = []
for sentences in soup.find_all('sentence'):
if sentences.has_attr('id'):
sent_id.append(sentences['id'])
text.append(sentences.get_text())
for opinions in soup.find_all('opinion'):
cat1 = []
pola1 = []
targ = []
if opinions.has_attr('category'):
cat1.append(opinions['category'])
if opinions.has_attr('polarity'):
pola1.append(opinions['polarity'])
if opinions.has_attr('target'):
targ.append(opinions['target'])
cat_list = list(zip(cat1,pola1,targ))
category.append(cat_list)
catlist= list(zip(sent_id, category, category))
text1.append(catlist)

我得到的输出如下：

[[('1126814:0',
[('RESTAURANT#GENERAL', 'positive', 'Leon')],
[('RESTAURANT#GENERAL', 'positive', 'Leon')])]]

提前感谢您的帮助。

Answer 1

这里是我用来获取所有链接的解决方案。这是您的解决方案的修改版本

from bs4 import BeautifulSoup
data = """<sentences>    
<sentence id="1126814:0">
<Opinions>
<Opinion target="Leon" category="RESTAURANT#GENERAL" polarity="positive" from="0" to="4"/>
<Opinion target="Leon" category="AMBIENCE#GENERAL" polarity="positive" from="0" to="4"/>
<Opinion target="specials" category="FOOD#QUALITY" polarity="positive" from="95" to="103"/>
<Opinion target="atmosphere" category="AMBIENCE#GENERAL" polarity="positive" from="123" to="133"/>
<Opinion target="French bistro fare" category="FOOD#QUALITY" polarity="positive" from="70" to="88"/>
</Opinions>
</sentence>"""
soup = BeautifulSoup(data, "html.parser")
sentences = soup.find_all("sentence")
result = []
for sent in sentences:
element = []
if sent.has_attr("id"):
element.append(sent["id"])
opinions = sent.find_all("opinion")
for op in opinions:
el = []
if op.has_attr("category"):
el.append(op["category"])
if op.has_attr("polarity"):
el.append(op["polarity"])
if op.has_attr("target"):
el.append(op["target"])
element.append(el)
result.append(tuple(element))
print(result)

结果

[('1126814:0', ['RESTAURANT#GENERAL', 'positive', 'Leon'], ['AMBIENCE#GENERAL', 'positive', 'Leon'], ['FOOD#QUALITY', 'positive', 'specials'], ['AMBIENCE#GENERAL', 'positive', 'atmosphere'], ['FOOD#QUALITY', 'positive', 'French bistro fare'])]

请让我知道这是否是你想要答案的格式